Line spacing devices for business machines



July 21, 1959 H. GULDNER ET AL 2,895,585

LINE SPACING DEVICES FOR BUSINESS MACHINES Filed April 18, 1958 5Sheets-SheerI 1 ATTORNEY 5 Sheets-Sheet 2 No? E# A: L rA Xa E my w u I ll ATTORNEY H. GLDNER ET AL LINE SFACING DEVICES FOR BUSINESS MACHINESFiled April 18, 1958 July 21, 1959 July 21, 1959 H. GULDNER ET Ag.2,895,585

LINE SPACING DEVICES FOR BUSINESS MACHINES Filed April 18, 1958 5Sheets-Sheet 3 ATTORNEY July 21, 1959 H. GLDNER ET AL 2,895,585

LINE SPACING DEVICES FOR BUSINESS MACHINES Filed April 18, 1958 5Sheets-Sheet 4 I l E1. 95

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LINE SPACING DEVICES FOR BUSINESS MACHINES Filed April 18, 1958 5Sheets-Sheet 5 ATTORNEY United States APatent fa LINE SPACING DEVICESFOR BUSINESS MACHINES Harry Gldner and Gerhard Tippmann, Karl-Marx-Stadt, Germany, assignors to VEB Buchungsmaschinenwerk Karl-Marx-Stadt,Karl-Marx-Stadt, Germany Application April 18, 1958, Serial No. 729,405

Claims priority, application Germany May 24, 1957 7 Claims. (Cl.197-114) The present invention relates to line spacing devices forbusiness machines, and more particularly to line spacing devices forbookkeeping, accounting machines, and the like, having movablecarriages.

In known devices of this type, the carriage holding the recordingmedium, sruch as paper or a card, is returned to its starting positionafter an entry is completed or after the result of an operation has beenprinted, and the cylinder on the carriage is turned through an anglecorresponding to one or several lines whereby the paper held by thecylinder is fed forward by a distance corresponding to one or severalline spaces.

Various bookkeeping operations, however, require the paper to be fedboth forward and backward. This ocJ curs, for example, when items havingmany digits and extending over the entire width of a column in the acicount card have to be added, so that a major portion of the machinecapacity or the entire capacity is made use of. Because of the largenumber of items added, the total at the bottom of the card requires morespace than the individual items. When several additions are to beperformed in adjoining columns, it may happen that because of lack ofspace the totals of adjoining columns are partially printed on top ofeach other and thus become illegible. The same holds true with regularentries of figures having many digits.

It is possible to avoid this difficulty by spacing figures one lineapart, thus requiring a new line for each total. When several columnsare to be added on the same sheet or card, this method requires muchspace and the totals are not readily identified with their respectivecolumns.

It is furthermore possible manually to advance the paper platen orcylinder by one line after the first total, to set it back by one lineafter the second total, etc. (see the following example). This methodresults in a distribution of figures on the sheet or card which isreadily comprehended, but it requires` appreciable skill on the part ofthe operator and is not adapted to automatic bookkeeping operations.

It is an object of the present invention to provide an automatic 'devicewhich permits addition of mul=ti-digit items arranged in adjoiningcolumns without danger of ttrermprsssion Ot totals.. f

Another object of the invention is to provide an automatic devicepermitting the entry into an account cardy of items exceeding themachine capacity of an individual column.

In its more specic aspects, the present invention provides a platen orcylinder which by means of two line spacing pawls acting in oppositedirections is adapted to be indexed backward through an adjustabledistance before the printing operation and to be indexed forward afterprinting through the same or another adjustable distance, there beingprovided means for disconnecting the forward and/or backward indexingmechanism. Where a split platen or cylinder is used, the inventionprovides for a second line spacing device acting upon one portion of thecylinder for forward indexing only, and connected to the other linespacing device capable of forward or backward indexing in such a mannerthat one cylinder portion may be selectively indexed forward orbackward, and the other cylinder portion is normally indexed forwardthrough standardl\ine spacings, and that with the cylinder sectionscoupled together selectively either the line spacing device capable offorward indexing only, or the line spacing device capable of bothforward and backward indexing may be used for moving the recordingmedium.

Other features and objects of the invention will hereinafter become morefully apparent from the following description of the annexed drawings,which illustrate a preferred embodiment of the invention, and whereinFig. 1 is a fragmentary top plan, partly in section, of a bookkeepingmachine equipped with the line spacing device of the invention, thecover of the machine being partly broken away.

Fig. 2 shows a section of the device of Fig. 1 taken on the line 2--2 ofFig. l.

Fig. 3 is a fragmentary View of the device of Fig. 2 taken in thedirection of the arrow A.

Fig. 4 is a sectional view taken on the line 4 4 of Fig. l.

Fig. 5 is a sectional View taken on the line 5-5 of Fig. l.

Fig. 6 is a sectional view taken on the line 6-6 of Fig. 1.

Fig. 7 is a sectional view taken on the line 7 7 of Fig. l.

Fig. 8 is a fragmentary view of the device of Fig. 1 taken in thedirection of arrow B.

Fig. 9 shows a section of the device of Fig. 6 taken on the line 9--9.

Fig. 10 is a fragmentary view of the device of Fig. 9 taken in thedirection of arrow C.

Referring now to the drawings, wherein like reference charactersdesignate like or corresponding parts throughout the several views,there is shown in Fig. l a top view of a bookkeeping machine having amovable carriage v1 and mounted thereon a cylinder or platen 2 providedwith a surface layer 3 of rubber. The keyboard or punchboard of themachine is generally indicated at 19. The machine being seen with therear side in front, the left side of the machine appears on the rightside of thc drawing and vice versa. The cylinder illustrated is of split`design and the two portions or halves are adapted to be manuallycoupled for joint rotary movement. The coupling means comprises a rod 4axially slidable in a bore of the left-hand section of the splitcylinder and adapted to engage a recess or recesses in the right-handsection of the cylinder 2, whereby the two halves of cylinder 2 arerigidly connected. The rod 4 is he'ld in either of two preferredpositions by a click-stop mecha-V nism, consisting of an elastic ring 5adapted to engage peripheral grooves of the rod 4. The cylinderl is' rosPatented July 21, 19594 tatably supported on the carriage 1 by means ofshafts 6 and 7 and is removable in a Well-known manner. Line spacingmechanisms are mounted at the two ends of the carriage 1 near shafts 6and 7 and are generally designated by numerals 8 and 9 respectively. Theline spacing mechanism 8 is adapted for both forward and backwardindexing of cylinder 2 and is now toV be described in more detail withreference to Figs. 1-5.

The terms forward and backward are used in connection with the variouselements of the device of the invention to designate movements resultingin forward and backward movement of the recording medium. Forwardindexing of the cylinder 2 is thus defined as a movement of the cylinder2 by which the recording medium is fed forward and a lower line spacethereon is presented to a printing device.

As sho-wn in Figs. l, 2, 4, and 5, a ratchet wheel 10 is xedly mountedon shaft 6. A U-shaped control element' 1l, which is rotatably mountedon shaft 6 and which envelops part of wheel 10, is linked with a lever13, pivotally mounted on a pin 12, by meansV of a pin engaging a recess14 of lever 13, as best seen in Figs. 2 and 4. Pivoting movement oflever 13 causes control element 11 to rotate. The other end of lever 13has a control rod 16 fastened thereto, the other end of the control rodbeing fastened to a lever 17 associated with the line spacing mechanismat the other end of the ca rriage (see Fig. 6).

A cam 20, shown in Fig. 2 to be mounted on a drive shaft 21 of thebookkeeping machine, causes reciprocating movement of a slide 22 whichis transmitted to a lever 23 equipped with a pin 24. A ydrive element 27is pivotally linked to a slide 25 which engages the control rod 16 bymeans of two lugs 26. Element 27 is pivotally movable to position itsedge 28 in the path of pin 24, whereby the reciprocating movement of pin24 is transmitted to control rod 16 when the edge 28 of drive element 27abuts against the pin 24. The pivotal movement of drive element 27 iseected during transverse movement of the carriage by a dog 29 adjustablyand removably mounted on carriage 1 and acting by means of intermediatelinks 30, 31, and 32, best seen in Figs. 2 and 3. The intermediate link32 presses against a pin 33 mounted on drive element 27.

As shown in Figs. 5 and l, two U-shaped pawls 39 and 40 are pivotallyfastened to a bolt 38 linking the two legs 36 and 37 of U-shapedIcontrol element 11. A spring 41 urges the center portions of pawls 39and 40 into engagement with the ratchet wheel 10 which is rigidlymounted on shaft 6 between the legs of control element 11. The teeth onthe rim of ratchet wheel 10 are of pointed shape for engagement with thecenter portions 42 and 43 of pawls 39 and 40, respectively. When controlelement 11 rotates clockwise, ratchet wheel 10 is entrained byengagement with pawl 40 to rotate in the same direction. When controlelement 11 rotates counterclockwise, ratchet wheel 10 is made to followby pawl 39. The center portions 42, 43, of pawls 39, 40, when inengagement abut against the sides of the teeth of wheel 10.

As best seen in Figs. 4 and 5, two cam discs 44, 45, are journaled onshaft 6 on either side of control element 1I. Pins 47, 48, mounted onpawls 39,. 40, slidably engage the circumferences of discs 44 and 45,respectively. The disc 44 is equipped with an extension lug 49 formanual adjustment. A U-shaped control link 50 (Figs. 1, 5) is rotatablymounted on a pin 52 supported by a lever 51 and is provided with twopins 53, 54. Movement of link 50 is effected by a pin 56 rigidly mountedon carriage 1 and engaging recessV 55 in link 50. Control rods 57, S8,best seen in Fig. 5, but also in Fig. 2, are pivotally fastened to pins54 andy 53 respectively of control link 50 and have their other endspivotal-ly fastened to pins 59 and-60 of cam discs 44 and 45Vrespectively. Control link 50 is thus connected to cam discs 44 and 45in such a manner that rotatory movement of control link 50 about shaft34 of lever 51 and the coordinated rotation of control link 50 about theaxis of pin 52 actuated by pin 56 causes rotation of cam discs 44 and 45in opposite directions, each of the two cam discs being rotated throughthe same angle in an opposite direction.

A latch 63 is pivotally supported, near one of its ends, on the carriage1, by means of bolt 62 (Figs. 1, 2). Latch 63 is provided with notches64 near its other end. Notches 64' are urged into engagement with pin 59of cam disc 44 by a spring 65.

An arresting lever 69 (shown in Fig. 2 and illustrated in more detail inFigs. 4, 5) is pivotally mounted on carriage 1 by means of shaft 68 andis equipped with a square-headed pin 70 for engagement with ratchetwheel 10 in a pawl-and-ratchet action under the pressure exerted byspring 71. Shaft 68, furthermore, pivotally supports a stopping lever 72having a lug 73 which is pressed against shaft 6 by means of a spring 74and is provided with a camming edge which cooperates with pin 47 ofU-shaped pawl 39. When the stopping lever 72 is pivoted in acounterclockwise direction, pin 47 cooperates with the camming edge 35of the stopping lever 72 for pivoting pawl 39 clockwise and out ofengagement with ratchet wheel 10.

As seen in Fig. 2, angle levers S2, 83 are pivotally supported oncarriage 1 by means of pin 75 and shaft 34, respectively. A connectinglink 77 is rotatably mounted on supporting pin 138. Link 77 is connectedwith a corresponding link 76 (Fig. 6) on the other side of the carriage1 by means of a rail 132. A lever 79 pivotally mounted on the frame ofthe bookkeeping machine, generally indicated by numeral 18, is pivotedby the interaction (best seen from Fig. 3) of a spring-biasedintermediate lever 80 with dogs 81 removably and adjustably mounted oncarriage 1. Pivotal movement of lever 79 is transmitted to connectinglinks 76 and 77 by means of rail 132. Connecting links 77 and the twoangle levers 82 and 83 are linked operatively. When the connecting link77 is rotated clockwise by means of lever 79, a pin 85 fastened to anglelever 82 and engaging a recess 84 of connecting link 77 transmits themovement of lever 79 to angle lever 82. Lever 82 is provided with arecess 86 cooperating with a pin 87 fixedly mounted on angle lever 83,which is thereby rotated clockwise. Angle lever 83 is pivotally linkedto cam disc 88 by pin 90. Cam disc 88 is slidably supported on shaft 6which is engaged by recess 89 of disc 88. When the angle lever 83 isrotated counterclockwise, cam disc 88 is displaced radially with respectto shaft 6 and the circular edge 91 of cam disc 88 releases pin 48 ofpawl 40.

Line spacing mechanism 9 on the left side of carriage 1 is constructedsimilarly to line spacing device 8, but it is not equipped for backwardindexing of cylinder 2. As shown in Fig. 6 and supplemented by detailsin Fig. 7, a ratchet wheel 92 and control element 93 are mounted onshaft 7. Pivotal movement of control rod 16 is transmitted by lever 17which is fastened to the end of rod 16 to control element 93. Element 93is equipped with but one pawl 94 which engages the ratchet wheel 92 whencontrol element 93 is rotated counterclockwise, thus causing rotation ofcylinder 2. A cam disc 96 is rotatably supported by shaft 7 and isequipped with an extension lug for manual adjustment. Pawl 94 carries apin 97 which by means of spring 98 is urged into contact with thecircumference of cam disc 96 and abuts against it when inoperative. Alatch 99 is rotatably mounted on a pin 100 and is equiped with notches101, -which are drawn into engagement with a pin 102 fastened to camdisc 96 by means of spring 106 whereby cam disc 96 is arrested in apredetermined position. An arresting lever 103 for arresting cylinder 2and a stopping lever 104 are provided in anassesses.

logy with the corresponding elements 69 and 72 on the other side ofcarriage 1. A manually operated lever 105 which has two camming lugs ispivotally supported by pin 100 and carries two pins 109 and 111. Whenlever 105 is rotated counterclockwise, arresting lever 103 pivotsclockwise because of the pressure exerted by pin 109 on the edge 110 ofarresting lever 103. Lever 112 is simultaneously pivotedcounterclockwise by pin 111 which engages slot 108 of lever 112. The endportion 113 of lever 112 is bent at a right angle and carries a pin 107which cooperates with a camming surface 114- of a lever 115 (Fig. 8) forrotating movement thereof.

A pin 117 fastened to bracket 126, which appears in.

Figs. 6, 8, 9, 10, engages an elongated opening 116k of lever 115whereby rotary movement of lever 112 causes displacement of rail 78through the intervening lever 115 and bracket 126. A lever 118 (Figs. 9and lO) pivotally mounted on carriage 1 has one arm 119 engaged betweena stop 120 xedly mounted on rail 78 and a recess 121 in a pawl 122rotatably mounted onrail 78. When the carriage 1 moves from a positionwithin operative range of one portion of the cylinder 2 into theoperative range of the other portion of cylinder 2, lever 118 is pivotedby a pin 123 xedly mounted on the frame 18 of the machine. The lever118, by means of its camming flanks 124 and 125, engages the pin 123 andpasses over it with the movement of carriage 1. Arm 119, being pivoted,causes rail 78 to move longitudinally. Brackets 126 and 127 are fastenedto rail 78 and are adapted to abut against angle brackets 128, 129 ofstopping levers 72 and 104, respectively, whereby the right stoppinglever 72 is pivoted when rail 78 is in its right terminal position, andthe left stopping lever 104 'is pivoted when rail 78 is in a leftintermediate position. If rail 78 is in the left terminal position afteractuating lever 105, the pawl 122 is pivoted counterclockwise out of therange of engagement with arm 119 of lever 118 by a stop 130 (Fig. whichcooperates with a pin 131.

The aforedescribed line spacing device of the invention operates asfollows:

' Let it be assumed that the two portions of cylinder 2 are iixedlycoupled and that the line spacing device 9 has been manuallydisconnected by means of lever 105, pawl 94 having been disengaged fromratchet wheel 92 by rotation of stopping lever 104 in acounter-clockwise direction, so that b th portions of cylinder 2 areindexed by line spacing mechanism 8. Pawl 122 (Fig. l0) is held out ofrange of engagement with arm 119, so that pivoting movement of lever 118caused by contact with pin 123 during the movement of the carriage 1over its entire course is not translated into longitudinal movement ofrail 78. Rail 78 is yin its left terminal position, in which thearresting elements of line spacing mechanism 8 are also disengaged.

It is desired to space items on a sheet of paper or other recordingmedium, as indicated in the above numerical example. The total of thefirst column is printed without requiring the use of more than one line.When the carriage advances to the second column, the dog 29 (Fig. 2),coordinated to the second column, engages the intermediate link 30,whereby drive element 27 is pivoted in a counter-clockwise direction bymeans of intermediate links 31 and 32. During the operating cycle, themovement of slide 22 caused by cam 20 is transmitted by means of slide25, control rod 16 and lever 13 to the control element 11. Furthermore,a dog 81 (Figs. 2 and 3) corresponding to the column reaches engagementwith intermediate lever 80, and cam disc 88 is moved radially towardsshaft 6 by a linkage connecting the cam disc 88 with intermediate lever80 and consisting of lever 79, rail 132, connecting link 77 and the twoangle levers 82 and 83.

When, during the start of the operating cycle, the control element 11 ispivoted clockwise as described above,

thev pin 48 slides along the curved circumference of canil disc 45 (seeFig. 4), thus holding pawl 40 out of engagement with ratchet wheel 10until the pin 48 reaches the straight inclined portion 137 of the cam.The setting of this inclined portion of pawl 40 determines the number ofspaces between consecutive lines. This will be described more fullybelow. In the example illustrated in the drawings, cam discs 44 `and 45are shown as being set for single line spacing. As the pin 48 slidesalong the inclined portion 137 of cam 4'5, the pawl 40 isy drawnclockwise into engagement lwith ratchet wheel 10 by the spring 41. Ascontrol element 11 continues in its rotary movement, ratchet wheel 10 isturned clockwise and the cylinder 2 carrying a sheet of paper or otherrecording medium is indexed backward by one line space. Squareheaded pin70 on arresting lever 69 simultaneously travels over the teeth ofratchet'wheel 10 against the pressure exerted by spring 71, and arreststhe wheel when the cylinder movement is completed.

When pawl 40 has caused indexing of the cylinder 2 through thepredetermined number of line spaces, it is taken out of engagement withratchet wheel 10 by a stop 134 abutting against pin 48. When controlelement 11 has completed its clockwise pivoting movement, it remainsstationary as required by the shape of cam 20 (Fig. 20) until thecalculated values have been printed. Then control element 11 starts itsreturn movement in a counterclockwise direction. Pin 47 of pawl 39slides along the curved surface of cam disc 44 until it reaches inclinedportion 135 of the cam surface when pawl 39 is pivotedv counterclockwiseby the force of spring 41 and is brought into engagement with ratchetWheel 10, whereby the ratchet wheel 10, together with cylinder 2 and therecording medium fastened thereon is indexed forward by one linespacing. After the cylinder has been rotated according to the number ofline spacings for which the mechanism is set, the pin 47 of pawl 39engages the camming edge 35 of stopping lever 72, whereby pawl 39 ispivoted out of engagement with ratchet wheel 10 against the force ofspring 41 and is returned to its starting position.

When the carriage moves to the third column, it is not necessary ordesired to distribute the total over two lines.-

be indexed in each cycle by pivotal adjustment of exten-` sion lug 49 ofcam disc 44 (Fig. 5). Cam disc 45 is simultaneously pivoted in theopposite direction by means.`

of linkages, so that the back indexing movement is set simultaneously.When cam disc 44 is turned manually, control link 50 is pivoted by meansof control 57, whereby cam disc 45 is moved in a direction opposite tothe rotation of cam disc 44 and by an identical angle of rotation bymeans of control rod 58. Latch 63 (Fig. 2), which engages pin 59 by itsnotches 64, arrests cam discs 44 and-45 in their selected positions, andthe stroke of pawls 39 and 40 is adjusted thereby. Notches 64 arelocated to correspond to line spacings in multiple units. Notch O whenengaged by pin 59 causes spacing by Zero lines, notch I by one linespace, notches Il and III by two and three line spaces respectively.

If the bookkeeping operations are of such nature that back indexing ofcylinder 2 is not required, dog 81 is removed. Rail 132 then is notacted upon by lever 79 and does not transmit movement to cam disc 88,which thus remains in its inactive position. Pawl 40, therefore, is notbrought into engagement with ratchet wheel 10 during vthe indexingcycle.

Certain bookkeeping operations which are performed on machines withsplit cylinders 2 require entry and summation of items on the right halfof the cylinder 2 involving forward and backward indexing of thecylinder, whereas the left half is moved in a single direction only. For

such4 operations, both line spacing mechanisms 8 and 9 are used. Whenoperations are performed on a split cylinder, the left and right linespacing. mechanisms are operating alternatingly. The two portions ofcylinder 2 are disconnected from each other by moving coupling rod 4 inthe direction of the arrow (Fig. 1). Lever 105 is turned clockwise, sothat arresting lever 103 is permitted to engage ratchet wheel under thepressure exerted by spring 133 (Figs. 6, 7), whereby the left part ofthe cylinder 2 is arrested independently of the right part. At the sametime, rail 73, which until now had been held in its left terminalposition by abutment of pin 109 against lever 115, is released and ismoved to the right until pawl 122 is released by stop 130. Before anentry is made on a recording medium held on the left half of cylinder 2,lever 11S passes over pin 123 with its camming flank 125 during thereturn movement of the carriage 1. Lever 118 is thereby pivotedcounterclockwise. Arm 119 of lever 118 is positioned in recess 121 ofthe pawl 122 in the inactive position thereof and therefore moves rail78 into its right terminal position. Stopping lever 72 is then pivotedby pivot 127 and keeps pawl 39 out of engagement with ratchet wheel 10.Line spacing.

device 9 is then ready to operate, since the pin 97 of pawl 94 abutsagainst cam disc 96 when stopping lever 104 is released by bracket 126.

When the line spacing cycle is initiated by dog 29, only mechanism 9will operate and will feed the record ing medium held on the leftportion of cylinder 2 in theV forward direction by the number of linespaces for which the mechanism is set, whereas the right-hand mechanism8 stands idle, so that the recording medium held on the right-handportion of cylinder 2 stands still. When the carriage moves into theoperative range of the right portion of cylinder 2, camming ank 124 oflever 118V engages pin 123 and causes rail 78 to shift into anintermediate left position, whereby line spacing mechanism 9 isdeactivated. When bookkeeping operations are performed with splitcylinders 2, the movement of carriage 1 from one position. to anotherposition thus automatically controls the operation of the two linespacing devices 8 and 9.

It is well known to those skilled in the art to connect or synchronizeprinting or other recording mechanisms, such as are commonly employed inbusiness machines, with the movement of a carriage supporting therecording medium. It is apparent, therefore, that the device of theinvention provides means for synchronizing the indexing movement of therecording medium with the printing operation.

It is sometimes desired to index the cylinder 2 through a differentnumber of line spaces in the forward direction than in the backwarddirection. Line spacing mechanism 8 can be adapted for such operation byelimination of the linkage formed by control rods S7, 58, control link50 and lever 51'. In this case, cam disc 45 has to be provided with anextension lug similar to lug 49 on cam disc 44, andwith an arrestingdevice analogous to that of cam disc 44 which consists of latch 63,spring 65, and pin 59.

It should be understood, of course, that the foregoing disclosurerelates to only a preferred embodiment of the invention and that it isintended to cover all changes and modifications ofV the example of theinvention herein chosen for the purpose of the disclosure, which do notconstitute departures from the spirit and the scope of the invention setforth in the appended claims.

What is claimed is:

1. In a business machine having a cylinder adapted to support arecording medium for printing thereon in a printing operation, saidcylinder being rotatable for indexing said medium; a line spacing devicecomprising ratchet means operatively connected to said cylinder, andfirst and second pawl means for selectively indexing said ratchet meansin a forward and backward direction respectively, and means forsynchronizing the indexing action of said pawl means on said ratchetmeans with said printing operation, whereby said cylinder is adapted tobe indexed backward prior to said printing operation, and to be indexedforward after said printing operation.

2. A device as set forth in claim 1, including means for individuallyadjusting the stroke of. said first and sccond pawl. means, whereby saidcylinder is adapted to be controllably indexed backward and forward.

3. A device as set forth in claim 1, including means for selectively andindividually deactivating said first and second pawl means, wherebyforward and. backward indexing movement respectively may be selectivelyeliminated.A

4. In. a business machine having a cylinder split transvers'ely to thelongitudinal axis thereof, each portion of said cylinder being adaptedto support a recording rnedium for printing thereon in a printingoperation, said cylinder being rotatable for indexing said medium, saidportions being connectable for joint rotary movement;

" a line spacing device comprising first ratchet means operativelyconnected to a first portion of said cylinder, first and second pawlmeans for selectively indexing said iirst ratchet means in a forward andbackward direction, respectively, second ratchet means operativelyconnected to a second portion of said cylinder, third pawl means forindexing said second ratchet means in a forward di rection, and meansfor connecting and synchronizing said rst, second, and third pawl means,whereby said first and said second cylinder portions are alternatinglyindexed for printing thereon.

5. A device as set forth in claim 4, including means for adjusting thestroke of said first, second, and third pawl means.

6. A device as set forth in claim 4, including means for selectively andindividually deactivating said first and second pawl means.

7. A device as set forth in claim 4, including means for selectivelydeactivating said third pawl means.

References Cited in the filey of this patent UNITED STATES PATENTS'

